Observation information
- date-obs: 2018-07-20
- time-obs: 08:54:11.384600000
- date-end: 2018-07-20
- time-end: 12:51:46.380800000
- obs_id: T02_068T01_9000002238
- exposure: 8145.16338886
- sourceid: AT2018cow
- observer: lazygun37
- ra_pnt: 244.0009
- dec_pnt: 22.26801
Basic statistics of files
| Param |
Original file |
Final file |
| Filename | modeM0/AS1T02_068T01_9000002238_15191cztM0_level2.evt
| modeM0/AS1T02_068T01_9000002238_15191cztM0_level2_quad_clean.evt
|
| Size (bytes) | 1,096,744,320 | 159,238,080 |
| Size | 1.0 GB
| 151.9 MB
|
| Events in quadrant A | 6,178,152 | 1,039,676 |
| Events in quadrant B | 12,386,399 | 876,411 |
| Events in quadrant C | 7,355,988 | 1,010,927 |
| Events in quadrant D | 6,407,998 | 988,704 |
Level1 data integrity
| Mode M9 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 12 | 0 |
| B | 0 | 12 | 0 |
| C | 0 | 12 | 0 |
| D | 0 | 12 | 0 |
| Mode SS |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 268 | 0 |
| B | 0 | 268 | 0 |
| C | 0 | 268 | 0 |
| D | 0 | 268 | 0 |
| Mode M0 |
| Quadrant | BADHDUFLAG | Total packets | Discarded packets |
|---|
| A | 0 | 26817 | 4 |
| B | 0 | 45335 | 3 |
| C | 0 | 29690 | 3 |
| D | 0 | 28194 | 3 |
Data saturation
| Quadrant | Total seconds | Saturated seconds | Saturation percentage |
|---|
| A | 13115 | 137 | 1.044605% |
| B | 13115 | 2564 | 19.550133% |
| C | 13115 | 130 | 0.991231% |
| D | 13115 | 267 | 2.035837% |
Noise dominated fraction
Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.
| Quadrant |
# 1 sec bins |
Bins with >0 counts |
Bins with >2000 counts |
High rate bins dominated by noise |
Noise dominated (total time) |
Noise dominated (detector-on time) |
Marked lightcurve |
| A | 14256 | 13117 | 0 | 0 | 0.00% | 0.00% |  |
| B | 14256 | 13117 | 1753 | 1753 | 12.30% | 13.36% |  |
| C | 14256 | 13116 | 2 | 2 | 0.01% | 0.02% |  |
| D | 14256 | 13117 | 127 | 127 | 0.89% | 0.97% |  |
Top noisy pixels
Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1
| Pixel properties |
Quadrant properties |
| Quadrant |
DetID |
PixID |
Counts |
Sigma |
Mean |
Median |
Sigma |
| A | 12 | 189 | 130914 | 406.82 | 1571 | 1536 | 318.0 |
| A | 0 | 226 | 13704 | 38.26 | 1571 | 1536 | 318.0 |
| A | 12 | 194 | 11462 | 31.21 | 1571 | 1536 | 318.0 |
| B | 3 | 112 | 6453982 | 23617.02 | 1417 | 1375 | 273.2 |
| B | 3 | 64 | 237979 | 865.99 | 1417 | 1375 | 273.2 |
| B | 4 | 48 | 85420 | 307.61 | 1417 | 1375 | 273.2 |
| C | 3 | 233 | 1428703 | 4058.73 | 1519 | 1525 | 351.6 |
| C | 13 | 61 | 10944 | 26.79 | 1519 | 1525 | 351.6 |
| C | 14 | 234 | 5422 | 11.08 | 1519 | 1525 | 351.6 |
| D | 10 | 70 | 374478 | 1018.04 | 1510 | 1466 | 366.4 |
| D | 2 | 33 | 133565 | 360.53 | 1510 | 1466 | 366.4 |
| D | 13 | 249 | 53461 | 141.91 | 1510 | 1466 | 366.4 |
Detector plane histogram (DPH)
Histogram calculated using DETX and DETY for each event in the final _common_clean file
| Quadrant A |
 |
 |
Quadrant B |
| Quadrant D |
 |
 |
Quadrant C |
Count rate plots and images
| Plot type |
Count rate plots |
Images |
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data. |
 |
 |
Quadrant-wise count rates
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins |
 |
 |
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins |
 |
 |
Housekeeping plots
| Parameter |
Plot |
| CZT HV Monitor |  |
| D_VDD |  |
| Temperature 1 |  |
| Veto HV Monitor |  |
| Veto LLD |  |
| Alpha Counter |  |
| _CPM_Rate |  |
| CZT Counter |  |
| +2.5 Volts monitor |  |
| +5 Volts monitor |  |
| _ROLL_ROT |  |
| _Roll_DEC |  |
| _Roll_RA |  |
| Veto Counter |  |